Facing tool



Patented Qct. 25, 1932 ITD STATES JOSEPH H. WILLIAMS, F SAGINAW,lli/IICI-IIGAN' FACING TOOL Application led April 19,

My invention relates to a tool for facing valves and valve seats andparticularly to a tool having inner and outer cutting faces adapted toreface worn or imperfect valves and Valve seats.

The prime object of the invention is to design a tool having a pluralityof double faced cutter teeth, so mounted and constructed that the toolcan be used for refacing valves as well as for facing valve seats.

Another object is to provide a simple and efhcient tool, whichautomatically adjusts itself to the valve seat being faced.

A further obj ect is to provide a tool of substantial and durableconstruction, which can be readily and efficiently used by mechanics orunskilled workmen, and in which the cutters are easily removable orinterchangeable for repair or renewal.

With the above and other objects in view, the present invention consistsin the combination and arrangement of parts, hereinafter more fullydescribed, illustrated in the accompanying drawing, and particularly5,-. pointed out in the appended claim, it being understood that changesmay be made in the form, size, proportion, and minor details ofconstruction, without departing from the spirit or sacrificing any ofthe advantages of frz; the invention.

In the drawing.

Fig. 1 is a sectional side view of my improved facing tool showing avalve in position for refacing.

ai Fig. Qis a top plan view thereof.

F ig. 3 is a side view showing the tool used for refacing a valve seat.

Fig. f1 is an edge View of one of the cutter members. Y

Fig. 5 is an end view thereof.

Fig. 6 is fragmentary sectional plan view of the cutter head.

Referring now particularly to the drawing, the numeral 5 indicates acutter head, coni- .:'1 cal in shape and formed at itsapex with an 1929.Serial No.` 356,380.

enlarged cylindrical chamber 6, opening into a centrally disposedpassage 7 formed in the hub 8. Spaced apart elongated slots 9 areprovided in the cutter head as shown, and are adapted to accommodate thecutter blades 10 which are mounted therein, said cutter blades beingformed as clearly shown in Figs. 4 and 5 of the drawing, the inne-r andouter faces 11 and 12 respectively being beveled as shown, and grooves13 are provided in the side walls, so that the blades will removably fitthe slots in the head, the ends of the cutters being angled, so that theends will be Hush with the wall of the cutter head, and it will thereforbe obvious that these blades can be formed from a long solid bar, saidbar being first grooved, and then cut to suitable lengths, therebymaking a very simple and economical manner of forming the cutter lblades.

The cutter blades and head are of course of a predetermined thickness,so that when the blades are in assembled position, the inner and outerface of said blades project beyond the wall of the head, the groovesbeing cut l so that the inner and outer faces are angled, and a sharpcutting edge is provided, the angle of the inner face being the same asthe angle of the outer face.

Y In Fig. 1 of the drawing, I have shown the tool as used for facing avalve 11i, in this operation, the tool is held stationary, and asuitable instrument, such as a screw driver 15 or the like, engages theslot 16, so that the valve can be oscillated or rotated and the valve isproperly faced. IVhen using the tool for facing a valve seat 17, a pin18 is provided and is inserted in the head as shown, a set screw 19being threaded in the hub 8 for securing the tool to the pin, one end ofsaid pin being formed with a head 20, which is adapted to be engaged bya suitable instrument to facilitate the oscillation of the tool.

From the foregoing description, it will be obvious that I have provideda very simple and economical tool in which the cutter blades can bereadily removed or replaced for repair or renewal, and which is adaptedfor facing valve seats as well as the valves.

What I claim is A cutter blade for a valve facing tool, comrising arhomboid shaped bar havin paral el grooves on two opposing side wal s tocooperate with the facing tool7 so that when the bar is placed inposition in the tool, the acute angled edges present cutting edges tothe work. i

In testimony whereof I hereunto aflix my signature. l Y

JOSEPH H. WILLIAMS.

